KR20170064670A - Polysiloxane Masterbatch Composition and Method for Preparing the Same - Google Patents
Polysiloxane Masterbatch Composition and Method for Preparing the Same Download PDFInfo
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- KR20170064670A KR20170064670A KR1020150170399A KR20150170399A KR20170064670A KR 20170064670 A KR20170064670 A KR 20170064670A KR 1020150170399 A KR1020150170399 A KR 1020150170399A KR 20150170399 A KR20150170399 A KR 20150170399A KR 20170064670 A KR20170064670 A KR 20170064670A
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L83/00—Compositions of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon only; Compositions of derivatives of such polymers
- C08L83/04—Polysiloxanes
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J3/00—Processes of treating or compounding macromolecular substances
- C08J3/20—Compounding polymers with additives, e.g. colouring
- C08J3/22—Compounding polymers with additives, e.g. colouring using masterbatch techniques
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/04—Homopolymers or copolymers of ethene
- C08L23/08—Copolymers of ethene
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/10—Homopolymers or copolymers of propene
- C08L23/12—Polypropene
Abstract
The present invention relates to a polysiloxane masterbatch composition and a process for producing the polysiloxane masterbatch composition. More particularly, the present invention relates to a polysiloxane masterbatch composition and a process for producing the polysiloxane masterbatch composition, The present invention relates to a polysiloxane master batch composition capable of improving the scratch resistance of a resin and a method for producing the same.
Description
The present invention relates to a polysiloxane masterbatch composition and a process for producing the polysiloxane masterbatch composition. More particularly, the present invention relates to a polysiloxane masterbatch composition and a process for producing the polysiloxane masterbatch composition, The present invention relates to a polysiloxane master batch composition capable of improving the scratch resistance of a resin and a method for producing the same.
In the field of automobiles, the demand for plastic materials used as automobile parts is continuously increasing as weight reduction and high performance of materials are continuously made.
Among various plastic materials, polypropylene resin has excellent moldability, impact resistance, chemical resistance, low specific gravity and low cost, and is widely used for interior and exterior materials of automobile. Especially, It is also used suitably as a material for required parts.
However, the polypropylene resin composition developed so far is excellent in terms of physical properties such as rigidity, scratch resistance and impact resistance, but the fluidity of the resin is decreased as the physical properties are higher, so that it is difficult to inject components having a small thickness for lightening the parts , Surface appearance problems and scratch problems of molded products occurred. On the other hand, when the fluidity of the resin is increased, the impact resistance is weakened, and there is a risk of generation of fragments at the time of the accident. Moreover, the rigidity of the molded product is lowered and the distortion and warping phenomenon occur.
The polypropylene resin composition developed as an automobile unpainted interior material such as instrument panel, glove box, console and filler trim has good products in terms of physical properties such as impact resistance and rigidity. However, as the impact strength is higher, . Therefore, when the impact resistance and the scratch resistance are required at the same time, a separate coating work is required, which leads to an increase in cost.
Accordingly, Korean Patent No. 0387649 proposes a polypropylene resin composition containing high-crystallinity polypropylene, ethylene? -Olefin elastomer, inorganic filler, organic peroxide and crosslinking assistant, but in this case, a crosslinked high molecular weight elastomer And scratch resistance is improved. On the other hand, there is a disadvantage in that the appearance quality due to the occurrence of flow marks during processing is deteriorated. When the crosslinking is insufficient, the scratch performance is not improved.
Therefore, the development of a resin composition having excellent scratch resistance as well as excellent workability such as mechanical properties such as impact strength and rigidity, flow marks and the like is very important in the automobile industry, It is becoming a challenge.
SUMMARY OF THE INVENTION The main object of the present invention is to solve the above-mentioned problems, and it is an object of the present invention to provide a polypropylene resin which is excellent in balance of physical properties, namely, moldability, impact resistance, rigidity, chemical resistance, The present invention provides a polysiloxane masterbatch composition and a process for producing the polysiloxane masterbatch composition.
In order to accomplish the above object, an embodiment of the present invention is a resin composition comprising 15 to 70% by weight of a polysiloxane gum, 15 to 70% by weight of a polypropylene resin, 5 to 30% by weight of a polypropylene resin containing an acid anhydride group, 5 to 30% by weight of an epoxy functional polysiloxane / X copolymer wherein E is ethylene and X is an?,? - ethylenically unsaturated carboxylic acid having 3 to 8 carbon atoms and 0.5 to 10% by weight of an epoxy functional polysiloxane To provide a polysiloxane masterbatch composition.
In one preferred embodiment of the present invention, the polysiloxane gum is a polydimethylsiloxane polymer having a weight average molecular weight of 100,000 g / mol or more and a kinematic viscosity (25 DEG C) of 100,000 cSt or more.
In one preferred embodiment of the present invention, the polypropylene resin may be at least one selected from the group consisting of a homopolymer, a copolymer, and a random polymer.
In one preferred embodiment of the present invention, the polypropylene resin containing an acid anhydride group is a polypropylene resin containing at least one acid anhydride group selected from the group consisting of maleic anhydride, itaconic anhydride and citraconic anhydride .
In one preferred embodiment of the present invention, X of the E / X copolymer is 5 to 30% by weight based on the total weight of the E / X copolymer.
In one preferred embodiment of the present invention, the E / X copolymer may be at least one selected from the group consisting of an ethylene / acrylic acid copolymer and an ethylene / methacrylic acid copolymer.
Another embodiment of the present invention is a polypropylene resin composition comprising 15 to 70% by weight of a polysiloxane gum, 15 to 70% by weight of a polypropylene resin, 5 to 30% by weight of a polypropylene resin containing an acid anhydride group, E / Ethylene, and X is an alpha, beta -ethylenically unsaturated carboxylic acid having 3 to 8 carbon atoms) and 0.5 to 10% by weight of an epoxy functional polysiloxane. And a manufacturing method thereof.
In another preferred embodiment of the present invention, the polysiloxane has a weight average molecular weight of 100,000 g / mol or more and a kinematic viscosity of 25 ° C) of 100,000 cSt or more is a polydimethylsiloxane polymer.
In another preferred embodiment of the present invention, the polypropylene resin may be at least one selected from the group consisting of a homopolymer, a copolymer, and a random polymer.
In another preferred embodiment of the present invention, the polypropylene resin containing an acid anhydride group is a polypropylene resin containing at least one acid anhydride group selected from the group consisting of maleic anhydride, itaconic anhydride and citraconic anhydride .
In another preferred embodiment of the present invention, X of the E / X copolymer is 5 to 30% by weight based on the total weight of the E / X copolymer.
In another preferred embodiment of the present invention, the E / X copolymer may be at least one selected from the group consisting of an ethylene / acrylic acid copolymer and an ethylene / methacrylic acid copolymer.
By incorporating the polysiloxane master batch composition according to the present invention into the polypropylene resin, the scratch resistance of the polypropylene resin composition can be greatly improved without causing a change in physical properties of the polypropylene resin composition.
Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. In general, the nomenclature used herein is well known and commonly used in the art.
Throughout this specification, when an element is referred to as "including " an element, it is understood that the element may include other elements as well, without departing from the other elements unless specifically stated otherwise.
The present invention relates to a resin composition comprising 15 to 70% by weight of a polysiloxane gum, 15 to 70% by weight of a polypropylene resin, 5 to 30% by weight of a polypropylene resin containing an acid anhydride group, an E / X copolymer 5 to 30% by weight of an α, β-ethylenically unsaturated carboxylic acid having 3 to 8 carbon atoms and 0.5 to 10% by weight of an epoxy functional polysiloxane, and a process for its preparation.
More specifically, when the polysiloxane master batch composition according to the present invention is contained in the polypropylene resin composition, the balance of the inherent physical properties of the polypropylene resin, that is, the molding processability, the impact resistance, the stiffness and the chemical resistance, The scratch resistance of the polypropylene resin molded article can be greatly improved.
The polysiloxane masterbatch composition according to the present invention is a polysiloxane masterbatch composition comprising a polysiloxane gum, a polypropylene resin, a polypropylene resin containing an acid anhydride group, an E / X copolymer wherein E is ethylene and X is an?,? -Ethylenically unsaturated carboxylic acid) and an epoxy functional polysiloxane.
The polysiloxane gum is an ultra high molecular weight polydimethylsiloxane polymer that improves surface properties such as scratch resistance and abrasion resistance and has a weight average molecular weight of 100,000 g / mol or more and a kinematic viscosity (25 DEG C) of 100,000 cSt, more preferably 300,000 to 1,000,000 g / mol, and a kinematic viscosity (25 ° C) of 10,000,000 to 20,000,000 cSt, from the viewpoint of surface property improvement.
If the content of the polysiloxane is less than 15% by weight based on the total weight of the master batch composition, the polysiloxane gum content is low and the scratch resistance of the molded product of the polypropylene resin is deteriorated. If the polysiloxane content is more than 70% by weight, The amount of polypropylene used during processing may be small and problems in processability may occur. The polysiloxane gum may be contained in an amount of 15 to 70% by weight based on the total weight of the polysiloxane master batch composition.
In the present invention, the polypropylene resin serves as a carrier resin in the master batch composition, and may be selected from at least one of a homopolymer, a copolymer and a random polymer, and has a melt index (ASTM D 1238, 230 属 C / 2.16 kg) of 5 g / 10 min or more can be used. From the viewpoint of compatibility with the polysiloxane gum, a resin having a melt index of 10 to 100 g / 10 min can be used.
When the polypropylene resin is less than 15% by weight based on the total weight of the master batch composition, the polysiloxane gum is excessive relative to the polypropylene type resin, so that it is difficult to prepare the pellet masterbatch. When the polypropylene resin exceeds 70% by weight The scratch resistance effect can not be expected, and may contain 15 to 70% by weight based on the total weight of the polysiloxane master batch composition.
In the present invention, the polypropylene resin containing an acid anhydride group is used for increasing the compatibility between the polypropylene resin and talc, and is preferably one or more selected from the group consisting of maleic anhydride, itaconic anhydride and citraconic anhydride A polypropylene homopolymer or a copolymer obtained by subjecting an acid anhydride to a graft reaction in a twin-screw extruder, a reaction vessel, or the like. The graft ratio of the polypropylene resin containing the acid anhydride group may be 0.1 to 10% by weight, preferably 0.5 to 5% by weight, and the melt index (230 占 폚, 2.16 kg) may be 30 g / , Preferably 100 to 500 g / 10 min, from the viewpoint of the flowability of the final product.
When the amount of the polypropylene resin containing the acid anhydride group is less than 5% by weight based on the total weight of the master batch composition, the compatibility of the polypropylene and the talc is deteriorated and the improvement in scratch resistance is insufficient. When the content exceeds 30% , The scratch resistance is excellent but the impact strength of the final polypropylene resin composition is lowered and the flowability is lowered and flow marks are generated on the surface of the molded product of the polypropylene resin. The polypropylene resin molded article can contain 5 to 30% by weight, more preferably 10 to 20% by weight, based on the weight of the polypropylene resin molded article, so that the balance between impact strength and scratch resistance of the molded article can be maintained.
For example, in the polypropylene resin containing an acid anhydride group obtained by a twin-screw extruder, the polypropylene resin may contain 0.1 to 10 parts by weight of an acid anhydride such as maleic anhydride, itaconic anhydride or citraconic anhydride, , Preferably 0.2 to 3 parts by weight, azo compounds such as 2,2-azobisisobutyronitrile and 2,2-azobis (2,4,4-trimethylvaleronitrile), dicumyl peroxide, t- 0.01 to 3 parts by weight, preferably 0.02 to 1 part by weight, of a radical initiator such as peroxide such as butyl peroxide is obtained by grafting through a twin-screw extruder (cylinder temperature: 180 to 250 ° C).
More specific examples of the acid anhydride group-containing polypropylene resin include Admer QB510A, QF551A, DuPont Bynel 50E662, 50E739, Fusabond P613, P353, and Espisa CP100, which are maleic anhydride graft polypropylene. .
In the present invention, the E / X copolymer is a copolymer of ethylene (E) and an?,? - ethylenically unsaturated carboxylic acid (X) having 3 to 8 carbon atoms and the X content is an E / May be contained in an amount of 5 to 30% by weight based on the weight. When the X content is less than 5% by weight based on the total weight of the E / X copolymer, the compatibility between the polypropylene resin and the talc is poor and the effect of increasing the scratch resistance is insufficient. When the X content exceeds 30% by weight, The compatibility between the resin and the polysiloxane gum may be deteriorated and the scratch resistance may be deteriorated.
Specific examples of the E / X copolymer may include an ethylene / acrylic acid copolymer, an ethylene / methacrylic acid copolymer, and the ethylene / acrylic acid copolymer sold by Exxon Mobil Corporation under the trade name Escor and Dow Chemical under the trade name Primacor. Ethylene / methacrylic acid copolymer is commercially available from DuPont under the trade name Nucrel, but it can be used without limitation.
When the polypropylene resin containing an acid anhydride group is used, the E / X copolymer increases the scratch resistance of the polypropylene resin composition. However, the E / X copolymer has a problem of breaking the balance of physical properties due to a decrease in impact strength, Can be used in an amount of 5 to 30% by weight based on the total weight of the polysiloxane master batch composition to improve the formation of marks, and preferably 10 to 20% by weight in terms of mechanical properties, scratch resistance and surface flow mark balance can be used have.
In the present invention, the epoxy functional polysiloxane containing an epoxy group (sock or short chain type) increases the compatibility with the polysiloxane gum as the master batch composition component, the polypropylene resin containing the acid anhydride group and the E / X copolymer . For example, the epoxy equivalent weight of the epoxy functional polysiloxane may be 0.35 to 5.5 Eq / kg in terms of reactivity with the E / X copolymer.
[Chemical Formula 1]
(2)
(3)
R-CH 2 CH 2 CH 2 OCH 2 -
(Wherein R is an alkyl group, and n and m are each independently an integer of 10 to 200)
At this time, the epoxy functional polysiloxane may be used in an amount of 0.5 to 10% by weight based on the total weight of the polysiloxane master batch composition, and preferably 1 to 5% by weight in terms of compatibility of the composition. If the epoxy functional polysiloxane is used in an amount less than 0.5% by weight based on the total weight of the master batch composition, the compatibility of the E / X copolymer with the polysiloxane results in a poor scratch resistance of the polysiloxane domain in the master batch And when it is used in an amount exceeding 10% by weight, the manufacturing cost may increase.
The polysiloxane masterbatch composition according to the present invention may be mixed / kneaded and then the polysiloxane master batch may be produced through injection molding through pelleting. The mixing / kneading may be performed using a general melt kneader such as a Banbury mixer, a single screw extruder, a biaxial extruder, a multi-screw extruder, etc. The kneading temperature may be a temperature at which the components of the master batch composition can be uniformly mixed The temperature can be used without limitation, and preferably from 150 to 200 캜.
The polysiloxane masterbatch composition according to the present invention is contained in the polypropylene resin composition so that the inherent property balance of the polypropylene resin, that is, the molding property, the impact resistance, the rigidity, the chemical resistance, The scratch resistance of the propylene resin can be greatly improved. At this time, the content of the polysiloxane master batch composition may be 0.1 to 5 parts by weight of the polysiloxane master batch composition relative to 100 parts by weight of the base resin of the polypropylene resin composition.
If the polysiloxane master batch composition is contained in an amount of less than 0.1 parts by weight based on 100 parts by weight of the base resin of the polypropylene resin composition, the polypropylene resin is not preferable because it has no scratch resistance effect, , It is not desirable to further improve the scratch performance of the scratcher and it is not effective due to the price problem.
In the polypropylene resin composition, the base resin is a conventional base resin used in the polypropylene resin composition, and is a homopolymer of one kind selected from the group consisting of a homopolypropylene resin, a random copolymer polypropylene resin and a block copolymer polypropylene resin Or more.
In addition, the polypropylene resin composition according to the present invention may contain a rubber component so as to have an appropriate flexibility and rigidity balance. The rubber component may be any rubber component used in the polypropylene resin composition, and may be, for example, a polyolefin elastomer. The content of the rubber component may be added in such an amount that the balance of physical properties such as impact reinforcement and rigidity can be maintained. .
The polypropylene resin composition of the present invention may contain an inorganic filler so as to have an appropriate balance of flexibility and rigidity. Examples of the inorganic filler include glass fiber, talc, mica, calcium carbonate, wollastonite, barium sulfate, clay, magnesium sulfate, whisker and the like. The inorganic filler not only imparts flexibility and rigidity to the composition, but also improves properties such as low temperature impact resistance and rigidity. The content of the inorganic filler may be added in such an amount that the balance of physical properties can be maintained by the contents used in the related art.
In addition, the polypropylene resin composition of the present invention may further include a coloring agent. Examples of the coloring agent that can be added additionally include aluminum flakes, aluminum powder, aluminum foil, zinc powder, bronze powder, mica powder, titanium white, zinc oxide, zinc sulfide, chromium yellow, barium yellow, Cobalt green or carbon black, or an inorganic pigment exemplified by Watchung Red, Permanant Red, Palladium Red, Benzidine Yellow, Phthalocyanine Green, and the like. Organic pigments can be applied. The colorant may be added as it is or in the form of a colorant master batch mixed with polypropylene in advance in an appropriate ratio. The content thereof may be adjusted in such a manner that the total amount of the resin composition And it is preferably 0.5 to 10% by weight based on the weight.
In addition, additives known in the art may additionally be used in the polypropylene resin composition of the present invention. For example, a long-term heat stabilizer, a weathering stabilizer, an antistatic agent, a lubricant, a slip agent (SLIP agent), a nucleating agent, a flame retardant and the like may be added within the scope of the present invention.
In another aspect, the present invention relates to a molded article made of the polypropylene resin composition.
The molded article according to the present invention is manufactured by a method known in the art, and is an injection molded article produced through an extrusion process and an injection process. More specifically, the components of the above-mentioned polypropylene resin composition are put into an extruder, and these are melted and kneaded in the extruder and pelletized to produce a polypropylene resin composition. Next, the resin composition is injected into an injection molding machine to produce a molded article through injection molding. The molded article may be an automotive interior and exterior material.
Hereinafter, the present invention will be described in more detail with reference to the following examples and comparative examples. The following examples are only illustrative of the present invention and do not limit the scope of protection of the present invention.
[ Manufacturing example ]
(A) polydimethylsiloxane gum, (B) a polypropylene resin, (C) a maleic anhydride graft polypropylene resin, (D) an E / X copolymer and (E) epoxy functional polysiloxane were obtained by melt blending in a kneader in the form of pellets.
(weight%)
(weight%)
(weight%)
(weight%)
(A) Polydimethylsiloxane gum (Dow Corning): weight average molecular weight 300,000 g / mol, kinematic viscosity (25 ° C) 10,000,000 cSt
(B) Homopolypropylene (Hanwha Total, HJ500): MI (230 DEG C, 2.16 kg) 11 g / 10 min
(C) maleic anhydride grafted polypropylene (manufactured by Espico Corporation, CP100)
(D) E / X copolymer (Exxon Mobil, Escor 5200, X content 15% by weight)
(E) epoxy-functional polysiloxane (Co., Damiani poly kemsa, FD480): socks Monotype formula 1 (R- is -CH 2 CH 2 CH 2 OCH 2 - , n is 100 Im)
[ Example And Comparative Example ]
(I) Slip agent, (J) colorant and (K) polysiloxane (B), (B) and (C) The masterbatch composition was mixed with a ribbon mixer and extruded at a extrusion temperature of 210 DEG C and a screw rotation speed of 400 rpm using a biaxial extruder having L / D = 40 and? = 30 mm to prepare pellets. The prepared pellets were dried at 80 ° C. for 2 hours and then injected at a molding temperature of 200 ° C. and a mold temperature of 25 ° C. in an extruder to prepare physical properties specimens.
(weight%)
(weight%)
(weight%)
(weight%)
(weight%)
(F) Base resin: Block polypropylene (Hanwha Total, BJ730)
(G) Rubber component: Polyolefin elastomer (Dow Chemical Co., Engage 8200)
(H) Inorganic filler: talc (KC2000C) having an average particle size of 4.5 +/- 1.0 mu m,
(I) Slip agent: Erucamide (Akzonobel)
(J) Colorant: NB 9096 (Woosung Chemical Co.)
(K) polysiloxane master batch: MB50-001 (Multibase)
The following physical properties of the specimens prepared in Examples 1 and 2 and Comparative Examples 1 to 3 were measured and are shown in Table 3.
(1) Density: Measured according to ASTM D792 method.
(2) MI (Melt index): Measured according to ASTM D1238 at 230 캜 under a load of 2.16 kg.
(3) Tensile strength: The tensile strength was measured according to ASTM D638, and the load application rate was measured at 50 mm / min.
(4) Flexural strength and flexural modulus: The flexural strength and the flexural modulus were measured according to ASTM D790, and the load application rate was measured at 10 mm / min.
(5) Izod Impact Strength (1/4 and 1/8 notch): Measured by Notched test piece at room temperature (23 ° C) and -30 ° C according to ASTM D256 method.
(6) Scratch resistance: Measured by applying the MS210-05 (sapphire method), which is a standard of Hyundai Kia cars, and the GM standard GMW14688-A-10N (Erickson method).
(7) Contamination resistance: Measured according to the standard of MS210-05 of Hyundai Kia Automobile standard.
As shown in Table 3, the specimens prepared in Examples 1 and 2 exhibited excellent scratch resistance while having good mechanical properties, impact resistance, heat resistance, surface properties and stain resistance, while Comparative Example 1 The samples of Comparative Examples 2 and 3 showed poor impact strength and poor surface properties and stain resistance. The specimens of Comparative Examples 2 and 3 exhibited poor scratch resistance and tensile strength.
Therefore, it was confirmed that the polysiloxane master batch composition according to the present invention can greatly improve the scratch resistance of the polypropylene resin composition without causing physical property changes of the polypropylene resin composition.
It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (12)
Wherein the polysiloxane gum is a polydimethylsiloxane polymer having a weight average molecular weight of 100,000 g / mol or more and a kinematic viscosity (25 DEG C) of 100,000 cSt or more.
Wherein the polypropylene resin is at least one selected from the group consisting of a homopolymer, a copolymer, and a random polymer.
Wherein the polypropylene resin containing an acid anhydride group is a polypropylene resin containing at least one acid anhydride group selected from the group consisting of maleic anhydride, itaconic anhydride and citraconic anhydride.
X of the E / X copolymer is 5 to 30% by weight based on the total weight of the E / X copolymer.
Wherein the E / X copolymer is at least one selected from the group consisting of an ethylene / acrylic acid copolymer and an ethylene / methacrylic acid copolymer.
The polysiloxane gum has a weight average molecular weight of 100,000 g / mol or more, a kinematic viscosity of 25 Lt; RTI ID = 0.0 > C) < / RTI > is 100,000 cSt or greater.
Wherein the polypropylene resin is at least one selected from the group consisting of homopolymers, copolymers, and random polymers.
Wherein the polypropylene resin containing an acid anhydride group is a polypropylene resin containing at least one acid anhydride group selected from the group consisting of maleic anhydride, itaconic anhydride, and citraconic anhydride. Way.
Wherein X of the E / X copolymer is 5 to 30% by weight based on the total weight of the E / X copolymer.
Wherein the E / X copolymer is at least one selected from the group consisting of an ethylene / acrylic acid copolymer and an ethylene / methacrylic acid copolymer.
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